General chemistry - Introduction

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Properties of mixtures

Properties of mixtures

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Liquid mixtures

Liquid mixtures

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Mixture separation - evaporation
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Mixture separation - extraction

Mixture separation - extraction

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Separation of a mixture of liquids by distillation
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Properties of matter - boiling point
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Volume contraction of liquids

Volume contraction of liquids

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Dissolution of salts

Dissolution of salts

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Comparison of a physical process and a chemical reaction
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Reaction of copper and sulphur

Reaction of copper and sulphur

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Chemical process: synthesis and analysis
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The law of conservation of mass in chemical reactions
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The law of definite proportions in chemical reactions
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Test for hydrogen

Test for hydrogen

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Test for nitrogen

Test for nitrogen

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Periodic system properties of a group of elements - Group 2
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Dipole properties

Dipole properties

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Water quality - contamination with heavy metals
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We examine our drinking water with Cobra4
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Salinity of soils and plant substrates
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Salinity changes of a watercourse
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We visit a wastewater treatment plant
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Mode of operation of an aeration tank (sewage treatmentplant)
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Water treatment in sewage treatment plants
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Properties of material - combustibility, melting point
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Properties of matter - density determination
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Electrical conductivity of solutions of salts
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Mixture separations - filtration, magnatic separation
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Mixture separation - chromatography
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Extraction of essential oils and essences with steam distillation
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Properties of matter - sublimation
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Dissolution processes on liquids
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Crystallisation

Crystallisation

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Melting-point lowering and boiling-point elevation
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Dissolution processes on liquids
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Determination of the molar masses of metals
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Properties of lithium, sodium and potassium
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Test of oxygen

Test of oxygen

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Test confirming the migration of ions by means of indicatorpaper
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Behaviour of salts with regard to solvents of differentpolarities
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Osmosis - dependence of the osmotic pressure on the concentration
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Model experiment on the desulphurisation of flue gas
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pH-value of everyday substances

pH-value of everyday substances

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